{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949061,-0.315093,0.000000,0.000000,0.176137,-0.530524,0.829168,0.000000,-0.260715,0.785274,0.561581,0.000000,-1664632.612956,5013878.980624,3561622.643648,1],    "boundingVolume": {    "region": [1.891282,0.596242,1.891420,0.596348,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447770.b3dm"}}}